Finding the Fourth Proportional to 1,377.56, 2,067.46 and 784.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.56 : 2,067.46 = 784.96 : x
2. Step 2: Convert to fraction form
   1,377.56/2,067.46 = 784.96/x
3. Step 3: Cross multiply
   1,377.56x = 2,067.46 × 784.96
4. Step 4: Simplify right side
   1,377.56x = 1,622,873.40
5. Step 5: Solve for x
   x = 1,622,873.40/1,377.56
6. Step 6: Final answer
   x = 1,178.08